Python-package watson_developer_cloud ConversationV1 API-Call

how may i get the information (attributes: username, password and version) for the method ConversationV1 in the package watson_developer_cloud for python? See the example below. from watson_developer_cloud import ConversationV1 watson_conversation = ConversationV1('6432cebc-14b1-4f93-8e73-12ccdb5891c1', 'bcaNRkHB1Uqq', '2018-09-20')